Backlight bleeding/dirty screen effect common in LCDs?

[Speedster911]

Been doing a bit of research lately on different types of LCDs either having this problem out of the box or developing it eventually over the years - "dirty screen effect" or bleeding around the edges.

In my case, it's a faint 1 cm-wide light grey halo around all four edges (think perfect rectangle) that I've started to notice this year.

From what I know there's no fix. In a perfectly dark room, I can see the light grey borders against a black background, but if I kill the backlight to zero, it's hardly noticeable. So let's take X1 gaming as an example - in night scenes, the halo is visible around the edges, though nothing that would say "end of the world". Against bright backgrounds, say the green X1 boot up screen, the halo makes the green look darker, but only slightly, particularly along the left and right edge.

So, what have your experiences been with backlight uniformity/bleeding, 'mura effect', Dirty Screen Effect etc?

 

[NLxAROSA]

Depends on the quality and type of backlight used. http://www.hdtvtest.co.uk/led-tv.php

My current Philips TV downstairs has a bit in the corners, but hardly noticable. My Samsung in the bedroom doesn't suffer from it at all. But it's worth checking before buying a new one.

 

[Speedster911]

Depends on the quality and type of backlight used. http://www.hdtvtest.co.uk/led-tv.php

My current Philips TV downstairs has a bit in the corners, but hardly noticable. My Samsung in the bedroom doesn't suffer from it at all. But it's worth checking before buying a new one.

I said in my post it started appearing after a few years. No such thing when I bought it. In fact, in the early years there were clouds/blooming in corners sometimes in other parts of the screen but that seems to have disappeared completely as time went by. Now, it's just this faint grey halo running symmetrically along the borders.

 

[NLxAROSA]

Like I said, depends on quality as well as type. Expect some degradation over time (though hard to predict in advance I guess). TV's hardly have the life time that they used to have.

 

[Speedster911]

Like I said, depends on quality as well as type. Expect some degradation over time (though hard to predict in advance I guess). TV's hardly have the life time that they used to have.

That's foh damn sure. A 29" CRT Philips TV I purchased 15+ years back is still going strong. I miss the 80s and 90s - that's when electronics boasted the best workmanship and build quality.